Question

A complex ion has a crystal field splitting energy of 171 kJ/mol. What color does the complex appear to be? Yellow Orange Red Purple Green Blue

Answer 1

Step-by-step explanation:

Because the complex absorbs 600 nm (orange) through 450 (blue), the indigo, violet, and red wavelengths will be transmitted, and the complex will appear purple. Note: This is the energy for one transition (i.e., in one complex). If you want to calculate the energy in J/mol, then you have to multiply this by Avogadro's number (NA).